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inventory Total product inventory Receivable, Investment, Sale Receivable, Investment, Sale Currency [Axis] Currency [Axis] Arrangement Duration Trading Arrangement Duration Entity Address, City Or Town Entity Address, City or Town Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Space Systems [Member] Space Systems [Member] Space Systems reporting segment. Inventory, Current [Table] Inventory, Current [Table] Principles of Consolidation Consolidation, Policy [Policy Text Block] Disclosure Text Block Supplement [Abstract] Disclosure Text Block Supplement [Abstract] January 2021 Share Repurchase Program January 2021 Share Repurchase Program [Member] January 2021 Share Repurchase Program Change in Accounting Estimate, Type [Domain] Change in Accounting Estimate, Type [Domain] Change in other, net Other Comprehensive Income (Loss), Other Components, Net of Tax Other Comprehensive Income (Loss), Other Components, Net of Tax Document Transition Report Document Transition Report Award Timing Predetermined Award Timing Predetermined [Flag] Fair Value of Long-term Debt Fair Value of Financial Instruments, Policy [Policy Text Block] Derivative Instruments and Hedging Activities Disclosures [Table] Derivative Instruments and Hedging Activities Disclosures [Table] Amount remaining under authorization for share repurchases Stock Repurchase Program, Remaining Authorized Repurchase Amount Termination Date Trading Arrangement Termination Date Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Common Stock, Shares Authorized Common Stock, Shares Authorized Accelerated Share Repurchase Initial Receipt (Shares) Accelerated Share Repurchase Initial Receipt (Shares) Accelerated Share Repurchase Initial Receipt (Shares) Revenue by Major Customers by Reporting Segments Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] FAS/CAS operating adjustment FAS/ CAS operating adjustment FAS/ CAS operating adjustment Property, Plant and Equipment [Abstract] Property, Plant and Equipment [Abstract] Derivative Instrument [Axis] Derivative Instrument [Axis] Environmental Remediation Range of Future Costs [Line Items] Environmental Remediation Range of Future Costs [Line Items] [Line Items] for Environmental Remediation Range of Future Costs, the amount accrued within the range and the deferred costs expected to be recoverable through overhead charges on US Government contracts [Table] Operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] All Trading Arrangements All Trading Arrangements [Member] All Adjustments to Compensation All Adjustments to Compensation [Member] Award Timing Disclosures [Line Items] Commercial Paper, at Carrying Value Commercial Paper, at Carrying Value Compensation Amount Outstanding Recovery Compensation Amount Cash Performance Units Cash Performance Units [Member] Cash performance units. Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Contracts Accounted for under Percentage of Completion [Member] Contracts Accounted for under Percentage of Completion [Member] Australia, Dollars Australia, Dollars Change in Contract with Customer, Liability [Abstract] Change in Contract with Customer, Liability [Abstract] Short-term Debt, Type [Axis] Short-Term Debt, Type [Axis] Insider Trading Arrangements [Line Items] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Accounting Changes and Error Correction [Abstract] Accounting Changes and Error Corrections [Abstract] Revenue, Major Customer [Line Items] Revenue, Major Customer [Line Items] Entity Registrant Name Entity Registrant Name Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Award Timing Method Award Timing Method [Text Block] Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements 2022 Five Year Term 2022 Five Year Term [Domain] 2022 Five Year Term Accrual for Environmental Remediation Costs Accrual for Environmental Loss Contingencies Adjustment to Compensation, Amount Adjustment to Compensation Amount Components of net periodic benefit cost Schedule of Costs of Retirement Plans [Table Text Block] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] Document Period End Date Document Period End Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Adoption Date Trading Arrangement Adoption Date Accumulated Depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Reconciliation of Revenue from Segments to Consolidated [Table] Reconciliation of Revenue from Segments to Consolidated [Table] Entity Central Index Key Entity Central Index Key Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Loss Contingency Accrual Loss Contingency Accrual Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Loss Contingencies by Nature of Contingency [Axis] Loss Contingency Nature [Axis] Federal and foreign income tax expense Income Tax Expense (Benefit) Inventory, Finished Goods, Net of Reserves Inventory, Finished Goods, Net of Reserves Designated as Hedging Instrument [Member] Designated as Hedging Instrument [Member] Income Tax Authority [Domain] Income Tax Authority [Domain] Accrued employee compensation Employee-related Liabilities, Current FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Disclosures [Text Block] Name Trading Arrangement, Individual Name Debt Instruments [Abstract] Debt Instruments [Abstract] B-21 Program LRIP Options [Member] B-21 Program LRIP Options [Member] B-21 Program LRIP Options Environmental Remediation [Table Text Block] Environmental Remediation [Table Text Block] Environmental Remediation Range of Possible Future Costs, Accrued Costs within that range and Deferred Cost expected to be recovered [Table Text Block] Equity [Abstract] Equity [Abstract] Inventory Disclosure [Text Block] Inventory Disclosure [Text Block] Minimum Loss Contingency Minimum Loss Contingency [Member] Minimum Loss Contingency Mission Systems [Member] Mission Systems [Member] Mission Systems reporting segment. Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Kathryn Simpson [Member] Kathryn Simpson Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Amendment Flag Amendment Flag Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents, at Carrying Value US Government US Government [Member] US Government [Member] Credit Facility [Domain] Credit Facility [Domain] Shares Repurchased Stock Repurchased and Retired During Period, Shares Commercial Paper, Maximum Borrowing Capacity Commercial Paper, Maximum Borrowing Capacity Commercial Paper, Maximum Borrowing Capacity Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Long-term debt, net of current portion of $1,582 for 2024 and $70 for 2023 Long-Term Debt, Excluding Current Maturities Leasehold Improvements [Member] Leasehold Improvements [Member] Weighted-average diluted shares outstanding, in millions Weighted Average Number of Shares Outstanding, Diluted Change in Accounting Estimate [Line Items] Change in Accounting Estimate [Line Items] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities Accelerated Share Repurchases, Date [Domain] Accelerated Share Repurchases, Date [Domain] Capital expenditures Payments to Acquire Property, Plant, and Equipment Company Selected Measure Amount Company Selected Measure Amount Paid-in capital Additional Paid in Capital, Common Stock Paid-in capital Additional Paid-in Capital [Member] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Total assets Assets Name Awards Close in Time to MNPI Disclosures, Individual Name Share Repurchase Program [Axis] Share Repurchase Program [Axis] Loss Contingencies Loss Contingencies [Line Items] Revision of Prior Period [Axis] Revision of Prior Period [Axis] Schedule of Change in Accounting Estimate [Table Text Block] Schedule of Change in Accounting Estimate [Table Text Block] Subsequent Events Subsequent Events [Text Block] United States UNITED STATES Fair Value, Recurring [Member] Fair Value, Recurring [Member] Segment Reconciling Items [Member] Segment Reconciling Items [Member] Other non-current liabilities Other Liabilities, Noncurrent Non-NEOs Non-NEOs [Member] Revenue, Remaining Performance Obligation, Amount Revenue, Remaining Performance Obligation, Amount Pension Benefits Pension Plan [Member] Total operating costs and expenses Operating Expenses SEGMENT INFORMATION Segment Reporting Disclosure [Text Block] Decrease in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Non-PEO NEO Non-PEO NEO [Member] Cost-type [Member] Time-and-Materials Contract [Member] Marketable Securities Marketable Securities Equity Component [Domain] Equity Component [Domain] Adjustment to Compensation: Adjustment to Compensation [Axis] Restricted Stock Rights and Restricted Performance Stock Rights Grant Date Aggregate Fair Value Restricted Stock Rights and Restricted Performance Stock Rights Grant Date Aggregate Fair Value Restricted Stock Rights and Restricted Performance Stock Rights Grant Date Aggregate Fair Value Inventory, Work in Process, Net of Reserves Inventory, Work in Process, Net of Reserves Pension and OPB contributions Payment for Pension and Other Postretirement Benefits Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Debt Instrument [Line Items] Debt Instrument [Line Items] Weighted-average common shares outstanding, in millions Weighted Average Number of Shares Outstanding, Basic Entity Current Reporting Status Entity Current Reporting Status Fixed-price [Member] Fixed-Price Contract [Member] Operating income Operating income Operating Income (Loss) Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Segments [Axis] Segments [Axis] Statement [Line Items] Statement [Line Items] Income Tax Reconciliation Deductions FDII Effective Income Tax Rate Reconciliation, FDII, Amount Share Repurchases - Notes to Table Share Repurchases Table Abstract Share Repuchase Table Footnotes, detail tags Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Line of Credit Outstanding Long-Term Line of Credit